Particles, water and oils in compressed air reduce the service life and functionality of components and systems. They also impair productivity and energy efficiency. Being aware of how to achieve proper compressed air quality—and the filters needed to achieve the recommended air quality for common industrial applications—is critical to a well-run plant. Air preparation There are three variables to air preparation: compressed air purity, compressed air quantity (flow) and air pressure. Depending on the system requirements, coordinating these three variables ensures a high compressed air quality and forms the basis for selecting the proper service unit components. The required compressed air purity increases both the running performance and the efficiency of pneumatic systems and can ensure compliance with legal specifications in industries such as the food and beverage industry. The flow quantity is largely determined by flow cross sections and the design dimensions of the machine. In general, provided the design is the same, larger components have higher flow rates. Optimized operating pressure increases the efficiency, minimizes wear and reduces power consumption. To coordinate the compressed air purity, compressed air quantity, and pressure for the specifications of a system, the correct individual components must be selected. These components include on/off valves, pressure build-up valves, pressure regulators, water separators, filters and drying units.
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